How do I compare two vendors objectively?

Compare on measurable, attributed signals rather than marketing. Useful axes: independent third-party test results for the same compound (purity and identity, with a verifiable lab key); normalized price as $/mg so different vial sizes are comparable; whether batch-specific COAs are public and recent; the evidence trail (verifiable on the lab's own portal vs. a vendor-hosted PDF); payment reversibility; and dated reputation across multiple independent sources. Put the two side by side on each axis and prefer the one that's stronger on independently verifiable data — not the one with better copy or a bigger discount code. This is exactly what our vendor and comparison pages are built to surface, with every datapoint sourced.